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[sean ryan]

hi to anyone that can help me
the above boiler has been working fine hot water nice and hot last week ch started acting up the boiler would light up then after a minute it would shut down then after a while fire up shut down upstairs rads were hot downstairs not then eventually they do and on and on now it wont fire up for ch also no error codes are present
has anyone any idea

 

[terryplumb]

Circulation issue probably. Is pump running ok ?

 

[sean ryan]

it seems to be but very hot to touch and all the temperature lights are on even thought the heatings not running

 

[terryplumb]

Apologies ,missed the bit about not firing up for c/ heating in your first post.
Do you have a room thermostat ,if so what type ?

 

[sean ryan]

an old ladris & gyr

 

[ianmcd]

clean the primary flow diaphragm and housing

 

[sean ryan]

thats the one at the back of the diverter valve

 

[ianmcd]

I would say on top but I suppose it is at the back, it is easy to see if it is that, just run the heating and watch it and you will see the pin coming up and the boiler will fire, when the boiler stops firing watch and see if the pin has dropped a little bit

 

[sean ryan]

i ment that silly me i will try tomorrow

 

[ianmcd]

thats the one at the back of the diverter valve

I have edited my last reply read to see how you check it

 

[sean ryan]

Once the boiler shuts off the pin stays up

 

[ianmcd]

Once the boiler shuts off the pin stays up

Then that isnt your problem then, are you sure it stays fully up ? when the boiler cuts out see if you can push the lever that the pin pushes, up a little bit with a screw driver

 

[sean ryan]

It goes up about 2mm but the pin looks fully extended I have taken a video but can't put it on here

 

[sean ryan]

Changed the pump over and still the same I did notice when draining the boiler down not a lot of water came out until I released the bolts on the pump a bit

 

[ianmcd]

Changed the pump over and still the same I did notice when draining the boiler down not a lot of water came out until I released the bolts on the pump a bit

Well that was a waste of time and money as the test I told you to do tests the pump